Nice little dio in the first build. I find shooting a camo scheme as one of the most difficult parts of the build myself. Not sure what the black color is on the schurzen and around the rear of the hull. I admire your effort, and for future reference check out the many of the Squadron Signal series of armor. They can be found for $10 or under on ebay and have many color drawings of units and camoflauge. Also, the Osprey new Vanguard books and Concord books are good refs too.
The T-34 is nice. Both models with some washes and maybe some pigments, especially on the Mk III with the mud, will make them both come alive with extra detail popping out.
Keep these early examples as reminders and if possible, explore a little with the weathering on them. Pigments can be forgiving too, if you don't like the results.